main.c文件中程序如下
#include"stm32f10x.h"
#include"stm32f10x_tim.h"
#include"stm32f10x_rcc.h"
#include"misc.h"
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void TIM_Configuration(void);
void main(void)
{
RCC_Configuration();
GPIO_Configuration();
TIM_Configuration();
NVIC_Configuration();
while(1)
{
}
}
void RCC_Configuration(void)
{
SystemInit();
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7,ENABLE);
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOB,&GPIO_InitStructure);
}
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStcuture;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStcuture.NVIC_IRQChannel=TIM7_IRQn;
NVIC_InitStcuture.NVIC_IRQChannelPreemptionPriority=0;
NVIC_InitStcuture.NVIC_IRQChannelSubPriority=0;
NVIC_InitStcuture.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStcuture);
}
void TIM_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStucture;
TIM_TimeBaseStucture.TIM_Prescaler=36000-1;
TIM_TimeBaseStucture.TIM_ClockDivision=0;
TIM_TimeBaseStucture.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseStucture.TIM_Period=10000;
TIM_TimeBaseStucture.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM7,&TIM_TimeBaseStucture);
TIM_UpdateRequestConfig(TIM7,TIM_UpdateSource_Regular);
TIM_Cmd(TIM7,ENABLE);
TIM_ITConfig(TIM7,TIM_IT_Update,ENABLE);
}
stm32f10x_it..c中中断程序如下
void TIM7_IRQHandler(void)
{
if(TIM_GetITStatus(TIM7, TIM_IT_Update)==SET)
{
GPIOB->ODR^=GPIO_Pin_0;
//GPIO_WriteBit(GPIOB, GPIO_Pin_0,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOB,GPIO_Pin_0)));
TIM_ClearITPendingBit(TIM7,TIM_FLAG_Update);
}
}
初次学习,希望能快点找到错误
------解决方案--------------------
void TIM_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStucture;
TIM_TimeBaseStucture.TIM_Prescaler=36000-1;
TIM_TimeBaseStucture.TIM_ClockDivision=0;
TIM_TimeBaseStucture.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseStucture.TIM_Period=10000;
TIM_TimeBaseStucture.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM7,&TIM_TimeBaseStucture);
TIM_UpdateRequestConfig(TIM7,TIM_UpdateSource_Regular);
TIM_Cmd(TIM7,ENABLE);
TIM_ITConfig(TIM7,TIM_IT_Update,ENABLE);
}
这里有问题吧,你只是初始化了TimeBase,还有四个捕获比较通道,你起码要初始化并用一个吧?
可以参考下面的初始化:都是用的比较而不是捕获功能。(同是新手,互相学习!)
int main()
{
GPIO_InitTypeDef initStruct;
NVIC_InitTypeDef nvic_InitStruct;
TIM_TimeBaseInitTypeDef tim_struct;
TIM_OCInitTypeDef tim_OCInitStruct;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_StructInit(&initStruct);
initStruct.GPIO_Pin = GPIO_Pin_0;
initStruct.GPIO_Mode = GPIO_Mode_Out_OD;
initStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &initStruct);
nvic_InitStruct.NVIC_IRQChannel = TIM2_IRQn;
nvic_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
nvic_InitStruct.NVIC_IRQChannelSubPriority = 1;
nvic_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvic_InitStruct);
tim_struct.TIM_Period = 65535;
tim_struct.TIM_Prescaler = 0x00;
tim_struct.TIM_ClockDivision = 0x0;
tim_struct.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &tim_struct);
TIM_PrescalerConfig(TIM2, 35999, TIM_PSCReloadMode_Immediate);
tim_OCInitStruct.TIM_OCMode = TIM_OCMode_Timing;
tim_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
tim_OCInitStruct.TIM_Pulse = 1000;
tim_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM2, &tim_OCInitStruct);
TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Disable);
tim_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
tim_OCInitStruct.TIM_Pulse = CCR2_VAL;
TIM_OC2Init(TIM2, &tim_OCInitStruct);
TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Enable);
tim_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
tim_OCInitStruct.TIM_Pulse = CCR3_VAL;
TIM_OC3Init(TIM2, &tim_OCInitStruct);
TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable);
tim_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
tim_OCInitStruct.TIM_Pulse = CCR4_VAL;
TIM_OC4Init(TIM2, &tim_OCInitStruct);
TIM_OC4PreloadConfig(TIM2, TIM_OCPreload_Enable);